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Article: Evaluating the performance of different procedures for constructing confidence intervals for coefficient alpha: A simulation study

TitleEvaluating the performance of different procedures for constructing confidence intervals for coefficient alpha: A simulation study
Authors
Issue Date2012
PublisherThe British Psychological Society. The Journal's web site is located at http://www.bps.org.uk/publications/jMS_1.cfm
Citation
British Journal Of Mathematical And Statistical Psychology, 2012, v. 65 n. 3, p. 467-498 How to Cite?
AbstractReliability is one of the most important aspects of testing in educational and psychological measurement. The construction of confidence intervals for reliability coefficients has important implications for evaluating the accuracy of the sample estimate of reliability and for comparing different tests, scoring rubrics, or training procedures for raters or observers. The present simulation study evaluated and compared various parametric and non-parametric methods for constructing confidence intervals of coefficient alpha. Six factors were manipulated: number of items, number of subjects, population coefficient alpha, deviation from essentially parallel condition, item response distribution and type. The coverage and width of different confidence intervals were compared across simulation conditions. © 2012 The British Psychological Society.
Persistent Identifierhttp://hdl.handle.net/10722/180517
ISSN
2015 Impact Factor: 3.698
2015 SCImago Journal Rankings: 2.380
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCui, Yen_US
dc.contributor.authorLi, Jen_US
dc.date.accessioned2013-01-28T01:39:22Z-
dc.date.available2013-01-28T01:39:22Z-
dc.date.issued2012en_US
dc.identifier.citationBritish Journal Of Mathematical And Statistical Psychology, 2012, v. 65 n. 3, p. 467-498en_US
dc.identifier.issn0007-1102en_US
dc.identifier.urihttp://hdl.handle.net/10722/180517-
dc.description.abstractReliability is one of the most important aspects of testing in educational and psychological measurement. The construction of confidence intervals for reliability coefficients has important implications for evaluating the accuracy of the sample estimate of reliability and for comparing different tests, scoring rubrics, or training procedures for raters or observers. The present simulation study evaluated and compared various parametric and non-parametric methods for constructing confidence intervals of coefficient alpha. Six factors were manipulated: number of items, number of subjects, population coefficient alpha, deviation from essentially parallel condition, item response distribution and type. The coverage and width of different confidence intervals were compared across simulation conditions. © 2012 The British Psychological Society.en_US
dc.languageengen_US
dc.publisherThe British Psychological Society. The Journal's web site is located at http://www.bps.org.uk/publications/jMS_1.cfmen_US
dc.relation.ispartofBritish Journal of Mathematical and Statistical Psychologyen_US
dc.titleEvaluating the performance of different procedures for constructing confidence intervals for coefficient alpha: A simulation studyen_US
dc.typeArticleen_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1111/j.2044-8317.2012.02038.xen_US
dc.identifier.pmid22295951-
dc.identifier.scopuseid_2-s2.0-84865712801en_US
dc.identifier.volume65en_US
dc.identifier.issue3en_US
dc.identifier.spage467en_US
dc.identifier.epage498en_US
dc.identifier.isiWOS:000308375300005-
dc.publisher.placeUnited Kingdomen_US

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